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CD74HC165 Datasheet(数据表) 2 Page - Texas Instruments

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部件型号  CD74HC165
说明  High Speed CMOS Logic 8-Bit Parallel-In/Serial-Out Shift Register
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
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CD74HC165 Datasheet(HTML) 2 Page - Texas Instruments

   
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Description
The Harris CD74HC165 and CD74HCT165 are 8-bit parallel
or serial-in shift registers with complementary serial outputs
(Q7 and Q7) available from the last stage. When the parallel
load (PL) input is LOW, parallel data from the D0 to D7
inputs are loaded into the register asynchronously. When the
PL is HIGH, data enters the register serially at the DS input
and shifts one place to the right (Q0→Q1→Q2, etc.) with
each positive-going clock transition. This feature allow paral-
lel-to-serial converter expansion by typing the Q7 output to
the DS input of the succeeding device.
For predictable operation the LOW-to-HIGH transition of CE
should only take place while CP is HIGH. Also, CP an d CE
should be LOW before the LOW-to-HIGH transition of PL to
prevent shifting the data when PL goes HIGH.
Functional Diagram
Ordering Information
PART NUMBER
TEMP. RANGE
(oC)
PACKAGE
PKG. NO.
CD74HC165E
-55 to 125
16 Ld PDIP
E16.3
CD74HCT165E
-55 to 125
16 Ld PDIP
E16.3
CD74HC165M
-55 to 125
16 Ld SOIC
M16.15
CD74HCT165M
-55 to 125
16 Ld SOIC
M16.15
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die is available which meets all electrical
specifications. Please contact your local sales office or Harris
customer service for ordering information.
TRUTH TABLE
OPERATING MODE
INPUTS
Qn REGISTER
OUTPUTS
PL
CE
CP
DS
D0 - D7
Q0
Q1 - Q6
Q7
Q7
Parallel Load
L
X
X
X
L
L
L-L
L
H
L
XXX
H
H
H-H
H
L
Serial Shift
H
L
lX
L
q0 - q5
q6
q6
HL
hX
H
q0 - q5
q6
q6
Hold Do Nothing
H
H
X
X
X
q0
q1 - q6
q7
q7
9
7
Q7
Q7
11
12
14
4
3
13
D5
D4
D3
D2
D1
D0
5
D6
6
D7
10
DS
CE
2
PL
DATA
INPUTS
SERIAL
OUTPUTS
CP
15
1
PARALLEL
GND = 8
VCC = 16
CD74HC165, CD74HCT165




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